Rotary attachment for windmills



(Model.) 0. L; BLAGKMAN.

Rotary Attachment lfor Windmill, &0.

Patented Oct. 5,1880.

fm-verz Z071 llamen S'rn'rns @Partnr OTIS L. BLAUKMAN, OF EVANSVILLE, WISCONSIN.

ROTARY `ATTACHMENT FOR WINDIVIILLS, SLC.

SPECIFICATION forming part of Letters Patent No. 232,875, dated October 5, 1880.

Application filed May 19, 1880. (Model.)

To all whom it may concern:

Be it known that I, OTIS L. BLACKMAN, of Evansville, Wisconsin, have invented a new and useful Rotary Attachment for Vind mills, Water-Wheels, and other Powers where it is desired to produce a rotary motion by means of a driving pitman-shaft working either in a vertical or a horizontal position.

The object of my invention is to overcome the dead-center always found in acrank motion operated by a rod or pitman-shaft. attain this object by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a vertical view of the entire machine. Fig. 2 is a detailed side view of the double-slotted lever-head and lever at the top of the machine, and Fig. 3 is a view of a similar lever-head and lever at ihc bottom of the machine.

Similar letters refer to similar parts throughout the several views.

In Fig. 1 the revolving table A A and the standards B B B B constitute the framework supportin g the whole machinery.

ct a is a shaft connecting the machine to the power and resting in the long box b, which is fastened to the top of the revolving table A A. C is the rotating wheel fastened securely to shaft cv a. D is the rotated wheel at the bottom of the machine. c c are small wrist-pin wheels fastened to the rear of wheels C and D. E E are double-slotted lever-heads working on the wrist-pin wheels c c, and forming the ends of a connecting-rod, of which rod the swiveled hollow rod d d forms the middle. c c is the swivel in the connecting-rod, which allows the top of the rod to revolve while the bottom remains stationary. ff are the points at which the ends E E are securely fastened to hollow rod d d. g g are wrist-pins fastened in the faces of wheels C and D, respectively. F F are the ends of rod working' on the wristpins g g. rlhese ends are connected by swiveled hollow rod h h, which passes through hollow rod d d. i i is a swivel in the hollow rod h h, and allows the top of the rod to revolve while the bottom remains stationary. 7o la is a shipping-rod fastened at the bottom to spider G G, and, passing` through the hollow rod h h, is connected at the top to the bottom of the revolving table A A by the swivel l, thereby keeping the hollow rods d d and h h in vertical position.

rlhe swivels c c, M, and Zallow the whole top of the machine, supported by the revolving table A A, to revolve in either direction while the bottom remains stationary. im is a shaft connecting` the rotated wheel D with the machinery to be driven. (Represented in Fig. l by the wheel H.) n a ando o are slots in the 1ever-heads E E. p is a ratchet shaped lever fastened in the slot a a by the piu r, and is worked back and forth across the slot o o by shafts a and m, and prevents the top of leverheads E E from dropping1 on the wrist-pin wheels c c.

Power applied to shaft a is carried to the wheel C, and, through the wrist-pin g, is transmitted to rod F F, and by it to the wheelD just before the wrist-pin g arrives at the points known in mechanics as the dead center. The wrist-pin wheels c c strike, alternately, the top of the slot a u, Fig. 3, taking the power from the rod F F, and, being' connected to the wristpin gg by the wheels() and D,push said wristpin g g by the dead-center, when they again resume their work.

I am aware that prior to my invention rotary powers with two rods have been in use. Therefore l do not especially claim the tworod attachment; but

I do claim as my inventionl. The. combination of the device of the double-slotted lever-head E E, Figs. 2 and 3, by placing slotted head E, Fig. 2, on shaft a a, between and in rear of rotary wheel C and end of long box b, and slotted head E, Fig. 3, on shaft m, between and in rear of reciprocating wheel D and end of shaft-box, and by aid of wrist-pin wheel c c to work double-slotted lever-heads, and, acting in conjunction with rods F F, connected to rotary wheel C and reciprocating wheel D by wrist-pin g' g, producing a reciprocal rotary motion corresponding to the rotary power applied, substantially as shown, for the purpose specified.

2. The combination of the device of swiveling the two rods from a common center by the hollow rod d d, swiveled in the center c c, to which the slotted heads E E are connected at ff, and the hollow rod h h, passing through IOO the hollow of the swveled rod d d and swiveled at v) i, connecting the rod F F, attached to rotary Wheel C, reciprocating Wheel D7 attached to shaft a t and m by wrist-pin g g, the rod and swivel stayed and supported in a Vertical position by the hollow rod k 7c, fastened by spider Gr G to frame-work B B and bottom of turn-tableat swivel l, and allowing the shipping-rod to pass unobstructed through center of shiftin g-pipe, thereby allowin gthe rotary power to revolve and ship in or out .the wind while the reciprocatin g machinery remains stationary, substantially as set forth.

3. The combination of the wheel c Gand the levers p p, to change a vertical or a horizontal 15 to a perfectlyreciprocating rotary motion, substantially as described.

4. The combination of the lever-heads .E E, the leversp19,and the wrist-pin Wheel c c, for overcoming a mechanical deadcenter in a crank 2 o rotary motion, substantially as set forth.

OTIS L. BLACKMAN.

Witnesses:

W. S. MORGAN, B. H. STANDIsH. 

